CN203883667U - Thyristor self-cooling power module - Google Patents

Abstract

A thyristor self-cooling power module, characterized in that it includes unit side plates (1), unit partitions (2), epoxy support rods (3), thyristor components (4), incoming and outgoing busbars (5), components Inner connection row (6), radiator front support (7), radiator front limiter (8), component connection row (9), unit bottom plate (10), small partition (11), voltage equalizing resistor (12), radiator rear positioner (13), absorbing resistor (14), absorbing capacitor (15), it is characterized in that, unit side plate, unit partition, unit bottom plate and epoxy support bar form shell, 5 thyristors The components are arranged in sequence, connected in series with the connecting row between the components, the position of the radiator front support, the radiator front limiter and the radiator rear positioning piece are fixed, and the voltage equalizing resistors, absorbing resistors and absorbing capacitors are fixed with busbars on each thyristor assembly. Its advantages are: saving raw materials, reducing costs, improving processing and maintenance efficiency, and enhancing the overall aesthetics of the module.

Description

A thyristor self-cooling power module

technical field

The utility model relates to the field of semiconductor switches, and specifically provides a high-voltage soft-start thyristor power module, in particular a new thyristor self-cooling power module suitable for 10kV/240A and below.

technical background

At present, the circuit topology of the high-voltage soft start device on the market mainly adopts the method of adjusting the input voltage to control the soft start and stop of the motor, that is, a three-inverse parallel thyristor power module is added in series between the power supply and the controlled motor, and by controlling the conduction of the thyristor The pass angle realizes the chopping of the AC three-phase power supply and controls the amplitude of the output voltage. During the starting process of the motor, the high-voltage soft starter increases the terminal voltage of the motor according to the set starting curve to make the motor accelerate smoothly. In terms of structural design of anti-parallel thyristor power modules, most of the market adopts a self-cooling radiator and thyristor vertical stacking arrangement. In this structure, heat gradually accumulates from bottom to top during the heat dissipation process of the radiator, causing the upper The temperature of the radiator rises, the heat dissipation is not smooth, and it is difficult to place the resistance capacitance absorption and voltage equalizing resistors of this structure, and the overall structure is complicated. Such a structural layout not only affects the electrical performance and reliability of the device, reduces heat dissipation efficiency and assembly efficiency, causes waste of raw materials, but also causes inconvenience in post-processing and maintenance, and also affects the overall simplicity and aesthetics.

Utility model content

Aiming at the above deficiencies, the utility model provides a simple, optimized and reliable thyristor self-cooling power module structure design based on the conventional high-voltage soft-start circuit topology, improves heat dissipation efficiency and facilitates assembly and production under the premise of satisfying electrical performance , save raw materials, reduce device cost, improve processing and maintenance efficiency, and enhance the overall aesthetics of the device.

The technical scheme that the utility model solves its technical problem adopts is as follows:

A new thyristor self-cooling power module, including two unit side plates, two unit partitions, four epoxy support rods, thyristor components, incoming and outgoing busbars, radiator front support, radiator front limit Components, connection row between components, unit bottom plate, four small partitions, voltage equalizing resistors, radiator rear positioning parts, absorption resistors, absorption capacitors, among them, two unit side plates and four epoxy support rods, unit bottom plate, composition The outer cuboid frame, the inner side of the two unit side panels is lined with a unit partition, and the four small partitions divide the internal space organized by the two unit partitions and the unit bottom plate into five independent spaces; five independent In each space, a thyristor assembly is installed; in the five independent spaces, the radiator front support, the radiator front limit piece and the radiator rear positioning piece fix the thyristor assembly on the unit bottom plate; the five independent spaces Inside, the voltage equalizing resistors, absorbing resistors and absorbing capacitors are fixed on each thyristor assembly, and the connection bar between the assemblies connects the 5 thyristor assemblies together.

The utility model is a novel thyristor self-cooling power module, wherein the radiator rear positioning part and the front supporting part are provided with corresponding grooves, so that the thyristor assembly can be put into the radiator rear positioning part through the guide rail formed by the groove Between the front support and the installation and disassembly of a single thyristor assembly.

The utility model is a novel thyristor self-cooling power module, wherein the thyristor assembly is composed of a thyristor, a thyristor, a first small radiator, a second small radiator, a large radiator, a voltage equalizing resistor, an absorbing resistor and an absorbing capacitor, and the thyristor and Thyristors are placed in the middle of the small radiator, small radiator and large radiator in opposite directions. One end of the voltage equalizing resistor is fixed on the positive pole, the other end is fixed on the negative pole, the absorption resistor is fixed on the positive pole, and the absorption capacitor is fixed on the negative pole. The head of the connecting row between the glyph components connects and fixes the first small radiator and the second small radiator.

The utility model discloses a novel thyristor self-cooling power module, wherein the radiator is placed vertically and keeps consistent with the heat dissipation direction of the heat dissipation teeth, there is no superimposition of heat between the radiators, and the heat dissipation efficiency is greatly improved.

The utility model has the advantages of:

The radiator is placed vertically, consistent with the heat dissipation direction of the cooling teeth. There is no superposition of radiators in the direction of heat dissipation. Each radiator works independently to directly dissipate heat into the air. There is no mutual superposition of heat between radiators, which greatly improves the heat dissipation efficiency.

The rear positioning part of the radiator, the front support part of the radiator and the front limiting part of the radiator work together to limit the position of the thyristor assembly and increase the insulation interval between the main circuit device and the grounding conductive device, increasing the creepage. Electrical distance improves safety performance.

The rear positioning part of the radiator and the front support part of the radiator work together to provide a guide rail design for the thyristor assembly, which greatly facilitates the assembly and disassembly process of the assembly and improves the efficiency.

The five thyristor components are relatively independent. When it is necessary to pull out a certain thyristor component, you only need to disassemble the busbar connected to it, and the other components can be pulled out without disassembly, which greatly shortens the maintenance time and improves the efficiency. Maintenance efficiency.

The voltage equalizing resistors, absorbing resistors and absorbing capacitors are directly fixed on the thyristor components with busbars. The busbars not only play the role of fixing, but also play the role of electrical connection, which saves cables and makes the overall structure more compact.

The connecting row between components is designed as a "T" shape, which connects the large radiator in the left component with the two radiators in the same phase on the right. One structural part connects three radiators, which improves the connection efficiency and reduces the cost. .

Description of drawings

Fig. 1 is the front isometric side view of the utility model

Fig. 2 is the back isometric side view of the utility model

Fig. 3 is a front isometric side view of the utility model when the thyristor assembly is not assembled

Figure 4 is a partial enlarged view of the thyristor assembly of the present invention

Detailed ways

As shown in Figures 1 and 2, a new thyristor self-cooling power module includes two unit side plates 1, two unit partitions 2, four epoxy support rods 3, thyristor components 4, and incoming and outgoing busbars 5 , radiator front support 7, radiator front limiter 8, connecting row 9 between components, unit bottom plate 10, four small partitions 11, voltage equalizing resistor 12, radiator rear positioning piece 13, absorbing resistor 14, absorbing Capacitor 15, wherein, the two unit side plates 1 and four anaerobic support rods 3, the unit bottom plate 10, form an external cuboid frame, the inner sides of the two unit side plates 1 are lined with a unit partition 2, four small partitions The board 11 divides the internal space organized by the two unit partitions 2 and the unit bottom plate 2 into five independent spaces; each of the five independent spaces is equipped with a thyristor assembly 4; in the five independent spaces, the radiator The front support piece 7, the radiator front limiting piece 8 and the radiator rear positioning piece 13 fix the thyristor assembly 4 on the unit bottom plate 10; in five independent spaces, the voltage equalizing resistor 12, the absorbing resistor 14 and the absorbing capacitor 15 are fixed On each thyristor assembly 4, an inter-assembly connecting row 9 connects five thyristor assemblies 4 together.

As shown in Figure 3, the utility model 1 is a new type of thyristor self-cooling power module. Corresponding grooves are arranged on the radiator rear positioning part 13 and the front support part (7), so that the thyristor assembly 4 can be formed through the grooves. The guide rail is placed between the radiator rear locator 13 and the front support (7) to facilitate the installation and disassembly of a single thyristor assembly.

As shown in Figure 4, wherein, the thyristor assembly 4 is made up of a thyristor 4A, a thyristor 4B, a first small radiator 4C, a second small radiator 4D, a large radiator 4E, a voltage equalizing resistor 12, a snubber resistor 14 and a snubber capacitor 15 Thyristor 4A and thyristor 4B are placed in the middle of small radiator 4C, small radiator 4D and large radiator 4E in opposite directions, one end of voltage equalizing resistor 12 is fixed on the positive pole, the other end is fixed on the negative pole, the absorption resistor 14 is fixed on the positive pole, and the absorption capacitor 15 is fixed on the negative pole, and the head of the connecting row 6 in the component or the connecting row 9 between the T-shaped components connects and fixes the first small radiator 4C and the second small radiator 4D. Keep consistent, there is no mutual heat superposition between radiators, and the heat dissipation efficiency is greatly improved.

The above description is an explanation of the utility model, not a limitation of the utility model. For the limited scope of the utility model, please refer to the claims. The utility model can be modified in any form without violating the spirit of the utility model.

Claims (4)

1. A new thyristor self-cooling power module, characterized in that it includes two unit side plates (1), two unit partitions (2), four epoxy support rods (3), thyristor components (4), Inlet and outlet busbars (5), radiator front support (7), radiator front limiter (8), inter-component connection bar (9), unit bottom plate (10), four small partitions (11), Voltage equalizing resistor (12), radiator rear positioning piece (13), absorbing resistor (14), absorbing capacitor (15), it is characterized in that two unit side plates (1) and four epoxy support rods (3), The unit bottom plate (10) forms an external cuboid frame, and the inner sides of the two unit side plates (1) are lined with a unit partition (2), and four small partitions (11) connect the two unit partitions (2) 1. The internal space organized by the unit bottom plate (2) is divided into five independent spaces; in the five independent spaces, a thyristor assembly (4) is installed respectively; in the five independent spaces, the radiator front The support piece (7), the radiator front limit piece (8) and the radiator rear positioning piece (13) fix the thyristor assembly (4) on the unit bottom plate (10); in the five independent spaces, the equal pressure The resistance (12), the absorbing resistor (14) and the absorbing capacitor (15) are fixed on each thyristor assembly (4), and the connection bar (9) between the assemblies connects the five thyristor assemblies (4) together. 2. According to a novel thyristor self-cooling power module according to claim 1, it is characterized in that the radiator rear positioning part (13) and the front support part (7) are provided with corresponding grooves, so that the thyristor assembly (4 ) can be placed between the radiator rear positioning piece (13) and the front support piece (7) through the guide rail formed by the groove to facilitate the installation and disassembly of a single thyristor assembly. 3. According to a new thyristor self-cooling power module according to claim 2, it is characterized in that the thyristor assembly (4) consists of a thyristor (4A), a thyristor (4B), a first small radiator (4C), a second small radiator (4D), large radiator (4E), voltage equalizing resistor (12), absorbing resistor (14) and absorbing capacitor (15), and thyristor (4A) and thyristor (4B) are placed in opposite directions on small radiator (4C ), between the small radiator (4D) and the large radiator (4E), one end of the equalizing resistor (12) is fixed on the positive pole, the other end is fixed on the negative pole, the absorption resistor (14) is fixed on the positive pole, and the absorption capacitor (15) is fixed on Negative pole, the head of connecting row (6) or T-shaped component interconnecting row (9) connects and fixes the first small radiator (4C) and the second small radiator (4D) in the assembly. 4. A new type of thyristor self-cooling power module according to claim 3, characterized in that the radiator is placed vertically, consistent with the heat dissipation direction of the cooling teeth, there is no mutual superposition of heat between the radiators, and the heat dissipation efficiency is greatly improved.